Your Source for DIY Pedal PCBs and NostalgiTone! › GuitarPCB Forum › General DIY Pedal Discussion › Bias a Boogie 57 circuit (solved) Tagged: boogie bias This topic has 16 replies, 5 voices, and was last updated 2 years, 3 months ago by Barry. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In